<template>
    <view class="u-keyboard" @touchmove.stop.prevent="() => {}">
        <view class="u-keyboard-grids">
            <block>
                <view class="u-keyboard-grids-item" v-for="(group, i) in abc ? EngKeyBoardList : areaList" :key="i">
                    <view :hover-stay-time="100" @tap="carInputClick(i, j)" hover-class="u-carinput-hover" class="u-keyboard-grids-btn"
                     v-for="(item, j) in group" :key="j">
                        {{ item }}
                    </view>
                </view>
                <view @touchstart="backspaceClick" @touchend="clearTimer" :hover-stay-time="100" class="u-keyboard-back"
                 hover-class="u-hover-class">
                    <u-icon :size="38" name="backspace" :bold="true"></u-icon>
                </view>
                <view :hover-stay-time="100" class="u-keyboard-change" hover-class="u-carinput-hover" @tap="changeCarInputMode">
                    <text class="zh" :class="[!abc ? 'active' : 'inactive']">中</text>
                    /
                    <text class="en" :class="[abc ? 'active' : 'inactive']">英</text>
                </view>
            </block>
        </view>
    </view>
</template>

<script>
    export default {
        name: "u-keyboard",
        props: {
            // 是否打乱键盘按键的顺序
            random: {
                type: Boolean,
                default: false
            }
        },
        data() {
            return {
                // 车牌输入时，abc=true为输入车牌号码，bac=false为输入省份中文简称
                abc: false
            };
        },
        computed: {
            areaList() {
                let data = [
                    '京',
                    '沪',
                    '粤',
                    '津',
                    '冀',
                    '豫',
                    '云',
                    '辽',
                    '黑',
                    '湘',
                    '皖',
                    '鲁',
                    '苏',
                    '浙',
                    '赣',
                    '鄂',
                    '桂',
                    '甘',
                    '晋',
                    '陕',
                    '蒙',
                    '吉',
                    '闽',
                    '贵',
                    '渝',
                    '川',
                    '青',
                    '琼',
                    '宁',
                    '挂',
                    '藏',
                    '港',
                    '澳',
                    '新',
                    '使',
                    '学'
                ];
                let tmp = [];
                // 打乱顺序
                if (this.random) data = this.$u.randomArray(data);
                // 切割成二维数组
                tmp[0] = data.slice(0, 10);
                tmp[1] = data.slice(10, 20);
                tmp[2] = data.slice(20, 30);
                tmp[3] = data.slice(30, 36);
                return tmp;
            },
            EngKeyBoardList() {
                let data = [
                    1,
                    2,
                    3,
                    4,
                    5,
                    6,
                    7,
                    8,
                    9,
                    0,
                    'Q',
                    'W',
                    'E',
                    'R',
                    'T',
                    'Y',
                    'U',
                    'I',
                    'O',
                    'P',
                    'A',
                    'S',
                    'D',
                    'F',
                    'G',
                    'H',
                    'J',
                    'K',
                    'L',
                    'Z',
                    'X',
                    'C',
                    'V',
                    'B',
                    'N',
                    'M'
                ];
                let tmp = [];
                if (this.random) data = this.$u.randomArray(data);
                tmp[0] = data.slice(0, 10);
                tmp[1] = data.slice(10, 20);
                tmp[2] = data.slice(20, 30);
                tmp[3] = data.slice(30, 36);
                return tmp;
            }
        },
        methods: {
            // 点击键盘按钮
            carInputClick(i, j) {
                let value = '';
                // 不同模式，获取不同数组的值
                if (this.abc) value = this.EngKeyBoardList[i][j];
                else value = this.areaList[i][j];
                this.$emit('change', value);
            },
            // 修改汽车牌键盘的输入模式，中文|英文
            changeCarInputMode() {
                this.abc = !this.abc;
            },
            // 点击退格键
            backspaceClick() {
                this.$emit('backspace');
                clearInterval(this.timer); //再次清空定时器，防止重复注册定时器
                this.timer = null;
                this.timer = setInterval(() => {
                    this.$emit('backspace');
                }, 250);
            },
            clearTimer() {
                clearInterval(this.timer);
                this.timer = null;
            },
        }
    };
</script>

<style lang="scss" scoped>
    @import "../../libs/css/style.components.scss";

    .u-keyboard-grids {
        background: rgb(215, 215, 217);
        padding: 24rpx 0;
        position: relative;
    }

    .u-keyboard-grids-item {
        @include vue-flex;
        align-items: center;
        justify-content: center;
    }

    .u-keyboard-grids-btn {
        text-decoration: none;
        width: 62rpx;
        flex: 0 0 64rpx;
        height: 80rpx;
        /* #ifndef APP-NVUE */
        display: inline-flex;        
        /* #endif */
        font-size: 36rpx;
        text-align: center;
        line-height: 80rpx;
        background-color: #fff;
        margin: 8rpx 5rpx;
        border-radius: 8rpx;
        box-shadow: 0 2rpx 0rpx #888992;
        font-weight: 500;
        justify-content: center;
    }

    .u-carinput-hover {
        background-color: rgb(185, 188, 195) !important;
    }

    .u-keyboard-back {
        position: absolute;
        width: 96rpx;
        right: 22rpx;
        bottom: 32rpx;
        height: 80rpx;
        background-color: rgb(185, 188, 195);
        @include vue-flex;
        align-items: center;
        border-radius: 8rpx;
        justify-content: center;
        box-shadow: 0 2rpx 0rpx #888992;
    }

    .u-keyboard-change {
        font-size: 24rpx;
        box-shadow: 0 2rpx 0rpx #888992;
        position: absolute;
        width: 96rpx;
        left: 22rpx;
        line-height: 1;
        bottom: 32rpx;
        height: 80rpx;
        background-color: #ffffff;
        @include vue-flex;
        align-items: center;
        border-radius: 8rpx;
        justify-content: center;
    }

    .u-keyboard-change .inactive.zh {
        transform: scale(0.85) translateY(-10rpx);
    }

    .u-keyboard-change .inactive.en {
        transform: scale(0.85) translateY(10rpx);
    }

    .u-keyboard-change .active {
        color: rgb(237, 112, 64);
        font-size: 30rpx;
    }

    .u-keyboard-change .zh {
        transform: translateY(-10rpx);
    }

    .u-keyboard-change .en {
        transform: translateY(10rpx);
    }
</style>
